NSClient++ 0.5.2.35 Local Privilege Escalation via ExternalScripts and Web Interface
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| NSClient++ | NSClient++ | unaffected |
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No data available yet.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-19753 | A local privilege escalation vulnerability exists in NSClient++ 0.5.2.35 when both the web interface and ExternalScripts features are enabled. The configuration file (nsclient.ini) stores the administrative password in plaintext and is readable by local users. By extracting this password, an attacker can authenticate to the NSClient++ web interface (typically accessible on port 8443) and abuse the ExternalScripts plugin to inject and execute arbitrary commands as SYSTEM by registering a custom script, saving the configuration, and triggering it via the API. This behavior is documented but insecure, as the plaintext credential exposure undermines access isolation between local users and administrative functions. |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.713% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-269 CWE-312 |
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Nsclient
Nsclient nsclient\+\+ |
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| Weaknesses | CWE-522 | |
| CPEs | cpe:2.3:a:nsclient:nsclient\+\+:0.5.2.35:*:*:*:*:*:*:* | |
| Vendors & Products |
Nsclient
Nsclient nsclient\+\+ |
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| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | A local privilege escalation vulnerability exists in NSClient++ 0.5.2.35 when both the web interface and ExternalScripts features are enabled. The configuration file (nsclient.ini) stores the administrative password in plaintext and is readable by local users. By extracting this password, an attacker can authenticate to the NSClient++ web interface (typically accessible on port 8443) and abuse the ExternalScripts plugin to inject and execute arbitrary commands as SYSTEM by registering a custom script, saving the configuration, and triggering it via the API. This behavior is documented but insecure, as the plaintext credential exposure undermines access isolation between local users and administrative functions. | |
| Title | NSClient++ 0.5.2.35 Local Privilege Escalation via ExternalScripts and Web Interface | |
| Weaknesses | CWE-269 CWE-312 |
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| References |
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| Metrics |
cvssV4_0
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